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9:12:35 
2023-04-18 
2483
Effects of climate change on cold-blooded animals
In the face of a warming climate that is having a profound effect on global biodiversity and will change the distribution and abundance of many animals, a Penn State-led research team has developed a statistical model that improves estimates of habitat suitability and extinction probability for cold-blooded animals as temperatures climb.
Cold-blooded animals -- a diverse group including fish, reptiles, amphibians and insects -- comprise most species on Earth. The body temperature of cold-blooded animals is strongly influenced by the temperature of their environment. Because their growth, reproductive success and survival is tightly coupled to environmental temperatures, climate change represents a significant threat to them.
Understanding the future effects of climate change on biodiversity is a global priority, according to research team leader Tyler Wagner, a scientist with the U.S. Geological Survey and a Penn State adjunct professor of fisheries ecology. But predicting where a species will exist and in what abundance under future temperatures is extremely challenging, he noted, because for many species this means estimating responses to temperatures that the animals have not yet experienced, and scientists have not yet observed.
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